diff options
| -rw-r--r-- | activerecord/lib/active_record/migration.rb | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/activerecord/lib/active_record/migration.rb b/activerecord/lib/active_record/migration.rb index 9219d70c65..d0d9304a36 100644 --- a/activerecord/lib/active_record/migration.rb +++ b/activerecord/lib/active_record/migration.rb @@ -181,9 +181,12 @@ module ActiveRecord # # To roll the database back to a previous migration version, use # <tt>rake db:migrate VERSION=X</tt> where <tt>X</tt> is the version to which - # you wish to downgrade. If any of the migrations throw an - # <tt>ActiveRecord::IrreversibleMigration</tt> exception, that step will fail and you'll - # have some manual work to do. + # you wish to downgrade. Alternatively, you can also use the STEP option if you + # wish to rollback last few migrations. <tt>rake db:migrate STEP=2</tt> will rollback + # the latest two migrations. + # + # If any of the migrations throw an <tt>ActiveRecord::IrreversibleMigration</tt> exception, + # that step will fail and you'll have some manual work to do. # # == Database support # |